Answer: Rick Springfield was a guest star in all of them. (Thank you rickspringfield.us for the reference details.) I usually know when the repeats of these shows are shown because of all the tweets of exclamation in the Twittersphere: “Is that Rick Springfield on ‘The Incredible Hulk’?!!!!!”

From his first role in 1977 on “Six Million Dollar Man” (if you don’t count his animated character in “Mission Magic” from 1973-1974) to next month’s role as Lucifer in “Supernatural,” RS has been acting for nearly four decades. So although acting was initially more of a way to make money during slow times in his musical career – he has always said that music comes first for him – he still has quite an impressive IMDb profile.

He’s also acted in three films – “Hard to Hold” in 1984, last year’s “Ricki and the Flash” and the not-yet-released “Traces.”

Plus there’s TV movies, TV series, ( “Human Target” in 1992 and “High Tide” from 1994 to 1997), two years of a Las Vegas show (“EFX,” 2001-2002) and even a stint on Broadway (“Smokey Joe’s Cafe” in 1999). He’s also featured in two documentaries: “Affair of the Heart,” made by fans about his impact on his fans’ lives, and “Sound City,” produced and directed by Dave Grohl.

Whoops, I’m already on the sixth paragraph of this post and I haven’t even mentioned “General Hospital” yet. Can’t forget Dr. Noah Drake, his most popular character and the role that catapulted his career along with the release of “Working Class Dog” in 1981.

Then there’s those 18 studio albums, too, with one Grammy award and eight songs charting in the Top 20 on the Billboard charts. And a bestselling memoir and a bestselling novel. Plus he’s still touring and producing new music.

And yet in many people’s minds, he’s a one-hit wonder soap opera star.